Why does a space shuttle carry hydrogen and why do they keep hydrogen and oxegen it in its liquid?
The space shuttle carries oxygen for two reasons: to allow the crew to breathe and to act as an oxidizer for its hydrogen fuel.
The space shuttle uses liquid nitrogen and liquid oxygen as fuel. Generally a sufficient quantity of fuel is carried but if need be re-fuelling can be done in space.
A shuttle, like the Space Shuttle, gets into space by being launched into the atmosphere with the help of powerful rockets. The rockets provide the necessary thrust and speed to overcome Earth's gravity and carry the shuttle into orbit around the planet. Once in orbit, the shuttle can maneuver and travel to its destination in space.
Rockets typically carry oxygen as part of a liquid oxidizer, such as liquid oxygen (LOX). The LOX is stored in tanks onboard the rocket and then combined with a fuel (such as liquid hydrogen) in the combustion chamber to produce thrust. This reaction generates the propulsion needed to lift the rocket into space.
The space shuttle carries oxygen for the astronauts to breathe. It is necessary for sustaining human life in the spacecraft since there is no atmosphere beyond Earth's atmosphere. Oxygen is also used for various life support systems and for maintaining a safe environment inside the shuttle.
Pratically the entire interior volume of the lower stages of rockets is fuel. This is why they have to be large: to hold enough fuel to accelerate the upper stages and carry them into orbit. The fuel may be liquid or solid. The space shuttle main engines used liquid oxygen and liquid hydrogen, which was heated back to a gaseous state just before it burned in the rocket engines.
A space shuttle carries its own supply of oxygen to sustain the astronauts' breathing when they are in space where there is no atmosphere. It ensures they have a continuous source of oxygen for respiration during the mission.
Space shuttles operate in the vacuum of space where there is no air to provide oxygen for combustion. Therefore, they carry their own liquid oxygen as an oxidizer to allow the fuel to burn in the rocket engines. This ensures that the shuttle can generate thrust and maneuver in space.
The Space Shuttle's External Tank carries 383,000 gallons of liquid hydrogen and 143,000 gallons of liquid oxygen to power the Space Shuttle Main Engines. The SSMEs burn for about 8.5 minutes (510 seconds), which means they consuming about 751 gallons of hydrogen per second and 280 gallons of oxygen per second, or about 1031 gallons of propellant overall per second. As an aside, the Solid Rocket Boosters each carry 1,000,000 pounds of solid propellant (both fuel and oxidizer are combined) and burn for about two minutes. So, that equates to about 16,667 pounds of propellant per second for the SRBs.
air oxygen food nuts water tooth brush Etc.
Actually Hydrogen is not normally transported as a liquid because in is considered far too dangerous, hydrogen is transported in high pressure gas cylinders, packs of cylinders (10 or more in a secure steel frame) or on specially built bulk high pressure cylinder trailers, always in gas form. Only on very rare occaisions is hydrogen transported as liquid, one example would be the Space Shuttle which carries liquid hydrogen as part of its fuel load.
The space shuttle uses its payload bay to carry and deploy satellites into space. Once the shuttle reaches the desired orbit, the robotic arm or astronauts inside the shuttle release the satellite into space.